Site Specific Conditional Sampler Garfield County, Colorado. VOC Data Summaries. Prepared for

Transcription

1 Site Specific Conditional Sampler Garfield County, Colorado VOC Data Summaries Prepared for Garfield County Public Health 195 West 14 th Street Rifle, Colorado Prepared by 1901 Sharp Point Dr., Suite F Fort Collins, CO February 26, 2017

2 TABLE OF CONTENTS Section Page 1.0 INTRODUCTION SAMPLE COLLECTION AND ANALYSIS OPERATIONAL SUMMARY DATA SUMMARIES 4-1 APPENDIX A Lab Results A-1 LIST OF FIGURES Figure Page 1-1 Map showing location of the general sampling area Photo of upwind conditional sampler system Photo of downwind conditional sampler system Photo of example canister Measured SNMOC Concentrations Meteorological Time Series Plot October Meteorological Time Series Plot November Meteorological Time Series Plot Upwind Sampler December Meteorological Time Series Plot Downwind Sampler December Wind Rose October Wind Rose November Wind Rose Upwind Sampler December 2017 (partial) Wind Rose Downwind Sampler December 2017 (partial) 4-10 LIST OF TABLES Table Page 3-1 Operational Summary 3-1 i

3 1.0 INTRODUCTION In response to citizen concerns, Garfield County Public Health contracted with Air Resource Specialists, Inc. (ARS) to design and build a conditional sampler to collect canister samples near a newly developed well-pad operated by URSA Operating Company, LLC. Figure 1-1 presents a map showing the general location of URSA operations and the monitoring location. Figures 1-2 and 1-3 show photographs of the sampling systems. This data submittal report summarizes Speciated Non-Methane Organic Compounds (SNMOC) measured at the URSA site. Any questions regarding the content of this report or the accompanying digital data files should be addressed to: Morgan Hill Environmental Health Specialist III mhill@garfield-county.com or Anna Triebel atriebel@garfield-county.com Garfield County Public Health - Rifle. 195 West 14th Street Rifle, CO phone fax Garfield County Public Health - Glenwood Springs 2014 Blake Avenue Glenwood Springs, CO phone fax 1-1

4 Figure 1-1. Map Showing General Location of the Sampling Area. 1-2

5 Figure 1-2. Upwind Conditional Sampler Figure 1-3. Downwind Conditional Sampler 1-3

6 Figure 1-4. Example Summa Canister 1-4

7 2.0 SAMPLE COLLECTION AND ANALYSIS Methodologies for the collection and analysis of Volatile Organic Compounds (VOC) at the URSA site specific conditional monitoring site meet EPA s Compendium of Methods for Determination of Toxic Organic Compounds in Ambient Air. Speciated compounds are analyzed from samples collected using a SUMMA stainless steel canister following EPA s Compendium Method TO-12, Determination of Non-Methane Organic Compounds (NMOC) in Ambient Air Using Cryogenic Preconcentration and Direct Flame Ionization Detection (PDFID). Collected samples are sent to Eastern Research Group, Inc. (ERG) for analysis. During the October and November samples, the two-canister conditional sampler collected ambient air samples when specific wind direction conditions were present. To collect samples influenced by well pad activities, the sampler valves opened on the downwind when prevailing winds came from the north (between 350 and 10 ). When the prevailing winds were from the south (between 170 and 190 ), the sampler valves opened on the upwind canister, separate from the downwind canister, to collect data not likely to be associated with well pad activities. A leak in the upwind canister portion of the system was discovered during the November sampling event, invalidating the upwind sample. On November 29, 2017, ARS visited the site to remove the sampling system for repair and reconfiguration. Two grab samples were collected in November, and one grab sample was collected in December. Following servicing and repairs, the original system was modified to utilize only one canister and reinstalled with an additional, identical, sampling system on the other side of the well pad. Beginning in First quarter 2018, each system will collect ambient air samples during periods of sufficient wind speed. The samplers operate when prevailing winds are from the southwest ( ), collecting upwind samples not likely associated with activities from the well pad using one system, and collecting downwind samples likely to be influenced by well pad activity using the other system. For this study, each sample comprises at least a seven day period to ensure sufficient collection for VOC identification. Following exposure, samples were collected by Garfield County Public Health site operators and shipped directly to ERG for analysis. Chain-of-custody accounting is fully documented by shipping records, shipping logs, and field sampling log sheets, maintained by Garfield County Public Health. ERG performs sample analysis and data validation for samples per EPA method TO-12 requirements and provides validated data to ARS for inclusion in reports, data submittals and archives. 2-1

8 3.0 OPERATIONAL SUMMARY The operational timelines for the canister samples for the reporting period are summarized in Table 3-1. The summaries include sampling times, site visits and significant events affecting data collection. Table 3-1 Sampler Operational Timeline October December 2017 Month/Year Upwind Canister Total Sampling Time Downwind Canister Total Sampling Time October minutes 493 minutes November 2017 invalid 441 minutes November 2017 B-pad grab sample (11/21/2017) River Bluff Road Grab Sample #1 (11/28/2017) December 2017 River Bluff Road Grab Sample #2 (12/19/2017) 3-1

9 4.0 DATA SUMMARIES Volatile organic compounds (VOCs) are carbon-based and hydrogen-based chemicals that exist in the gas phase or can evaporate from liquids. VOCs can react in the atmosphere to form ozone (O 3 ) and particulate matter. Hazardous air pollutants (HAPs) are a subset of VOC compounds, and include compounds that are known or believed to cause human health effects. Speciated Non-Methane Organic Compounds (SNMOC) are collected and analyzed according to EPA Compendium Method TO-12. Figure 4-1 presents measured SNMOC compounds collected from the site specific conditional sampler during each week long sampling event. Associated meteorological data are presented in Figures 4-2 through 4-5 as timeline series plots. Figures 4-6 through 4-9 present monthly wind roses associated with each conditional sampling period. 4-1

10 Figure 4-1. Measured SNMOC Concentrations Site Specific Conditional Sampler 4-2

11 Figure 4-2 Garfield County - Site Specific Sampler - Meteorological Data October SDWD VWD (deg) SWS (m/s) TMP (degc) Date 10/01 10/02 10/03 10/04 10/05 10/06 10/07 10/08 10/09 10/10 10/11 10/12 10/13 10/14 10/15 10/16 10/17 10/18 10/19 10/20 10/21 10/22 10/23 10/24 10/25 10/26 10/27 10/28 10/29 10/30 10/31 4-3

12 Figure 4-3 Garfield County - Site Specific Sampler - Meteorological Data November SDWD VWD (deg) SWS (m/s) TMP (degc) Date 11/01 11/02 11/03 11/04 11/05 11/06 11/07 11/08 11/09 11/10 11/11 11/12 11/13 11/14 11/15 11/16 11/17 11/18 11/19 11/20 11/21 11/22 11/23 11/24 11/25 11/26 11/27 11/28 11/29 11/30 4-4

13 Figure 4-4 Upwind Sampler Garfield County - Meteorological Data December SDWD VWD (deg) SWS (m/s) TMP (degc) Date 12/01 12/02 12/03 12/04 12/05 12/06 12/07 12/08 12/09 12/10 12/11 12/12 12/13 12/14 12/15 12/16 12/17 12/18 12/19 12/20 12/21 12/22 12/23 12/24 12/25 12/26 12/27 12/28 12/29 12/30 12/31 4-5

14 Figure 4-5 Downwind Sampler Garfield County - Meteorological Data December SDWD VWD (deg) SWS (m/s) TMP (degc) Date 12/01 12/02 12/03 12/04 12/05 12/06 12/07 12/08 12/09 12/10 12/11 12/12 12/13 12/14 12/15 12/16 12/17 12/18 12/19 12/20 12/21 12/22 12/23 12/24 12/25 12/26 12/27 12/28 12/29 12/30 12/31 4-6

15 Garfiled County Colorado Site Specific Sampler Figure 4-6 Wind Rose 10/01/ /31/ NNW N NNE 315 NW 45 NE 40% WNW 20% ENE 270 W Calm 0.13% E 90 WSW ESE SW 225 SE 135 SSW 100.0% Collected 100.0% Valid 744 Possible /744 Collected /744 Valid Collection Statistics Include: Wind Speed and Wind Direction (SWS-1; VWD-1) S 180 SSE Key Scalar Wind Speed (m/s) Calm <

16 Garfiled County Colorado Site Specific Sampler Figure 4-7 Wind Rose 11/01/ /30/ NNW N NNE 315 NW 45 NE 40% WNW 20% ENE 270 W Calm 1.56% E 90 WSW ESE SW 225 SE 135 SSW 84.5% Collected 84.5% Valid 684 Possible /578 Collected /578 Valid Collection Statistics Include: Wind Speed and Wind Direction (SWS-1; VWD-1) S 180 SSE Key Scalar Wind Speed (m/s) Calm <

17 Garfield County Colorado Upwind Sampler NNW Figure 4-8 Wind Rose 0 N 12/01/ /31/2017 (partial) NNE 315 NW 45 NE 40% WNW 20% ENE 270 W Calm 7.69% E 90 WSW ESE SW 225 SE 135 SSW 98.9% Collected 98.9% Valid 276 Possible /273 Collected /273 Valid Collection Statistics Include: Wind Speed and Wind Direction (SWS-1; VWD-1) S 180 SSE Key Scalar Wind Speed (m/s) Calm <

18 Garfiled County Colorado Downwind Sampler NNW Figure 4-9 Wind Rose 0 N 12/01/ /31/2017 (partial) NNE 315 NW 45 NE 40% WNW 20% ENE 270 W Calm 12.68% E 90 WSW ESE SW 225 SE 135 SSW 100.0% Collected 100.0% Valid 276 Possible /276 Collected /276 Valid Collection Statistics Include: Wind Speed and Wind Direction (SWS-1; VWD-1) S 180 SSE Key Scalar Wind Speed (m/s) Calm <

19 Appendix A URSA Pad Site Specific Conditional Sampler Garfield County, Colorado Speciated VOC Concentrations A-1

20 Garfield County - URSA Pad Site Specific Conditional Sampler October 2017 Upwind Canister Detected Compound Concentration (ppbv) Comments 1,2,3-Trimethylbenzene ND U 1,2,4-Trimethylbenzene ,3,5-Trimethylbenzene ,3-Butadiene ND U 1-Butene ND CE, U 1-Decene ND U 1-Dodecene ND U 1-Heptene ND U 1-Hexene U 1-Nonene Octene Pentene Tridecene ND U 1-Undecene ND U 2,2,3-Trimethylpentane ND U 2,2,4-Trimethylpentane ND U 2,2-Dimethylbutane ,3,4-Trimethylpentane ND U 2,3-Dimethylbutane ,3-Dimethylpentane ,4-Dimethylpentane Ethyl-1-butene ND U 2-Methyl-1-butene ND CE, U 2-Methyl-1-pentene ND U 2-Methyl-2-butene ND CE, U 2-Methylheptane Methylhexane Methylpentane Methyl-1-butene ND U 3-Methylheptane Methylhexane Methylpentane Methyl-1-pentene ND U Acetylene a-pinene U Benzene b-pinene ND U cis-2-butene ND U cis-2-hexene ND U cis-2-pentene ND U Cyclohexane CE = Not reportable due to co-eluting compound U = Under detection limit

21 Garfield County - URSA Pad Site Specific Conditional Sampler October 2017 Upwind Canister Detected Compound Concentration (ppbv) Comments Cyclopentane Cyclopentene ND U Ethane Ethylbenzene Ethylene Isobutane Isobutylene ND CE, U Isopentane ND CE, U Isoprene Isopropylbenzene ND U m-diethylbenzene ND U Methylcyclohexane Methylcyclopentane m-ethyltoluene m-xylene/p-xylene n-butane n-decane n-dodecane n-heptane n-hexane n-nonane n-octane n-pentane n-propylbenzene ND U n-tridecane ND U n-undecane o-ethyltoluene ND U o-xylene p-diethylbenzene ND U p-ethyltoluene ND U Propane Propylene Propyne ND U Styrene ND CE, U Toluene trans-2-butene ND U trans-2-hexene ND U trans-2-pentene U CE = Not reportable due to co-eluting compound U = Under detection limit

22 Garfield County - URSA Pad Site Specific Conditional Sampler October 2017 Downwind Canister Detected Compound Concentration (ppbv) Comments 1,2,3-Trimethylbenzene ND U 1,2,4-Trimethylbenzene ,3,5-Trimethylbenzene ,3-Butadiene Butene ND U, CE 1-Decene ND U 1-Dodecene ND U 1-Heptene ND U 1-Hexene Nonene Octene Pentene Tridecene ND U 1-Undecene ND U 2,2,3-Trimethylpentane ND U 2,2,4-Trimethylpentane ND U 2,2-Dimethylbutane ,3,4-Trimethylpentane ND U 2,3-Dimethylbutane ,3-Dimethylpentane ,4-Dimethylpentane Ethyl-1-butene ND U 2-Methyl-1-butene ND CE, U 2-Methyl-1-pentene ND U 2-Methyl-2-butene ND CE, U 2-Methylheptane Methylhexane Methylpentane Methyl-1-butene ND U 3-Methylheptane Methylhexane Methylpentane Methyl-1-pentene ND U Acetylene a-pinene ND U Benzene b-pinene ND U cis-2-butene cis-2-hexene ND U cis-2-pentene ND U Cyclohexane CE = Not reportable due to co-eluting compound U = Under detection limit

23 Garfield County - URSA Pad Site Specific Conditional Sampler October 2017 Downwind Canister Detected Compound Concentration (ppbv) Comments Cyclopentane Cyclopentene ND U Ethane Ethylbenzene Ethylene Isobutane Isobutylene ND CE, U Isopentane ND CE, U Isoprene Isopropylbenzene ND U m-diethylbenzene ND U Methylcyclohexane Methylcyclopentane m-ethyltoluene m-xylene/p-xylene n-butane n-decane n-dodecane U n-heptane n-hexane n-nonane n-octane n-pentane n-propylbenzene ND U n-tridecane ND U n-undecane o-ethyltoluene U o-xylene p-diethylbenzene ND U p-ethyltoluene ND U Propane Propylene Propyne ND U Styrene ND CE, U Toluene trans-2-butene trans-2-hexene ND U trans-2-pentene CE = Not reportable due to co-eluting compound U = Under detection limit

24 Garfield County - URSA Pad Site Specific Conditional Sampler November 21, 2017 B-pad Grab Sample Detected Compound Concentration (ppbv) Comments 1,2,3-Trimethylbenzene ND U 1,2,4-Trimethylbenzene ,3,5-Trimethylbenzene ,3-Butadiene Butene ND CE, U 1-Decene ND U 1-Dodecene ND U 1-Heptene ND U 1-Hexene ND U 1-Nonene ND U 1-Octene Pentene Tridecene ND U 1-Undecene ND U 2,2,3-Trimethylpentane ND U 2,2,4-Trimethylpentane ND U 2,2-Dimethylbutane ,3,4-Trimethylpentane ND U 2,3-Dimethylbutane ,3-Dimethylpentane ,4-Dimethylpentane Ethyl-1-butene ND U 2-Methyl-1-butene ND CE, U 2-Methyl-1-pentene ND U 2-Methyl-2-butene ND CE, U 2-Methylheptane Methylhexane Methylpentane Methyl-1-butene ND U 3-Methylheptane Methylhexane Methylpentane Methyl-1-pentene ND U Acetylene a-pinene ND U Benzene b-pinene ND U cis-2-butene cis-2-hexene ND U cis-2-pentene ND U Cyclohexane CE = Not reportable due to co-eluting compound U = Under detection limit

25 Garfield County - URSA Pad Site Specific Conditional Sampler November 21, 2017 B-pad Grab Sample Detected Compound Concentration (ppbv) Comments Cyclopentane Cyclopentene ND U Ethane Ethylbenzene Ethylene Isobutane Isobutylene ND CE, U Isopentane Isoprene ND U Isopropylbenzene ND U m-diethylbenzene ND U Methylcyclohexane Methylcyclopentane m-ethyltoluene U m-xylene/p-xylene n-butane n-decane n-dodecane ND U n-heptane n-hexane n-nonane n-octane n-pentane n-propylbenzene ND U n-tridecane ND U n-undecane ND U o-ethyltoluene U o-xylene p-diethylbenzene ND U p-ethyltoluene ND U Propane Propylene Propyne ND U Styrene ND CE, U Toluene trans-2-butene trans-2-hexene ND U trans-2-pentene ND U CE = Not reportable due to co-eluting compound U = Under detection limit

26 Garfield County - URSA Pad Site Specific Conditional Sampler November 28, 2017 River Bluff Road Grab Sample 1 Detected Compound Concentration (ppbv) Comments 1,2,3-Trimethylbenzene ,2,4-Trimethylbenzene ,3,5-Trimethylbenzene ,3-Butadiene Butene ND CE, U 1-Decene ND U 1-Dodecene ND U 1-Heptene ND U 1-Hexene U 1-Nonene Octene Pentene Tridecene ND U 1-Undecene ND U 2,2,3-Trimethylpentane ND U 2,2,4-Trimethylpentane ND U 2,2-Dimethylbutane ,3,4-Trimethylpentane U 2,3-Dimethylbutane ,3-Dimethylpentane ,4-Dimethylpentane Ethyl-1-butene ND U 2-Methyl-1-butene ND U 2-Methyl-1-pentene ND U 2-Methyl-2-butene ND U 2-Methylheptane Methylhexane Methylpentane Methyl-1-butene ND U 3-Methylheptane Methylhexane Methylpentane Methyl-1-pentene ND U Acetylene a-pinene ND U Benzene b-pinene ND U cis-2-butene ND U cis-2-hexene ND U cis-2-pentene ND U Cyclohexane CE = Not reportable due to co-eluting compound U = Under detection limit

27 Garfield County - URSA Pad Site Specific Conditional Sampler November 28, 2017 River Bluff Road Grab Sample 1 Detected Compound Concentration (ppbv) Comments Cyclopentane Cyclopentene ND CE, U Ethane Ethylbenzene Ethylene Isobutane Isobutylene ND CE, U Isopentane Isoprene Isopropylbenzene ND U m-diethylbenzene ND U Methylcyclohexane Methylcyclopentane m-ethyltoluene m-xylene/p-xylene n-butane n-decane n-dodecane n-heptane n-hexane n-nonane n-octane n-pentane n-propylbenzene n-tridecane U n-undecane o-ethyltoluene o-xylene p-diethylbenzene ND U p-ethyltoluene Propane Propylene Propyne ND U Styrene ND U Toluene trans-2-butene ND U trans-2-hexene ND U trans-2-pentene ND U CE = Not reportable due to co-eluting compound U = Under detection limit

28 Garfield County - URSA Pad Site Specific Conditional Sampler November 2017 Downwind Canister Detected Compound Concentration (ppbv) Comments 1,2,3-Trimethylbenzene ND U 1,2,4-Trimethylbenzene ,3,5-Trimethylbenzene ,3-Butadiene ND U 1-Butene ND CE, U 1-Decene ND U 1-Dodecene ND U 1-Heptene ND U 1-Hexene Nonene Octene Pentene Tridecene ND U 1-Undecene ND U 2,2,3-Trimethylpentane ND U 2,2,4-Trimethylpentane ND U 2,2-Dimethylbutane ,3,4-Trimethylpentane ND U 2,3-Dimethylbutane ,3-Dimethylpentane ,4-Dimethylpentane Ethyl-1-butene ND U 2-Methyl-1-butene ND CE, U 2-Methyl-1-pentene ND U 2-Methyl-2-butene ND CE, U 2-Methylheptane Methylhexane ND CE, U 2-Methylpentane Methyl-1-butene ND U 3-Methylheptane Methylhexane Methylpentane Methyl-1-pentene ND U Acetylene a-pinene ND U Benzene A-01 b-pinene ND U cis-2-butene U cis-2-hexene ND U cis-2-pentene ND U Cyclohexane CE = Not reportable due to co-eluting compound U = Under detection limit

29 Garfield County - URSA Pad Site Specific Conditional Sampler November 2017 Downwind Canister Detected Compound Concentration (ppbv) Comments Cyclopentane Cyclopentene ND U Ethane Ethylbenzene Ethylene Isobutane Isobutylene ND CE, U Isopentane ND CE, U Isoprene ND U Isopropylbenzene ND U m-diethylbenzene ND U Methylcyclohexane Methylcyclopentane m-ethyltoluene ND U m-xylene/p-xylene n-butane n-decane n-dodecane n-heptane n-hexane n-nonane n-octane n-pentane n-propylbenzene n-tridecane ND U n-undecane o-ethyltoluene ND U o-xylene p-diethylbenzene ND U p-ethyltoluene ND U Propane Propylene Propyne Styrene ND CE, U Toluene trans-2-butene U trans-2-hexene ND U trans-2-pentene CE = Not reportable due to co-eluting compound U = Under detection limit

30 Garfield County - URSA Pad Site Specific Conditional Sampler December 19, 2017 River Bluff Road Grab Sample 2 Detected Compound Concentration (ppbv) Comments 1,2,3-Trimethylbenzene U 1,2,4-Trimethylbenzene ,3,5-Trimethylbenzene ,3-Butadiene ND U 1-Butene ND CE, U 1-Decene ND U 1-Dodecene ND U 1-Heptene ND U 1-Hexene ND U 1-Nonene Octene ND U 1-Pentene Tridecene ND U 1-Undecene ND U 2,2,3-Trimethylpentane ND U 2,2,4-Trimethylpentane ND U 2,2-Dimethylbutane ,3,4-Trimethylpentane ND U 2,3-Dimethylbutane ,3-Dimethylpentane ,4-Dimethylpentane Ethyl-1-butene ND U 2-Methyl-1-butene ND U 2-Methyl-1-pentene ND U 2-Methyl-2-butene ND U 2-Methylheptane Methylhexane Methylpentane Methyl-1-butene ND U 3-Methylheptane Methylhexane Methylpentane Methyl-1-pentene ND U Acetylene a-pinene ND U Benzene b-pinene ND U cis-2-butene ND U cis-2-hexene ND U cis-2-pentene ND U Cyclohexane CE = Not reportable due to co-eluting compound U = Under detection limit

31 Garfield County - URSA Pad Site Specific Conditional Sampler December 19, 2017 River Bluff Road Grab Sample 2 Detected Compound Concentration (ppbv) Comments Cyclopentane Cyclopentene ND U Ethane Ethylbenzene Ethylene Isobutane Isobutylene ND CE, U Isopentane Isoprene ND U Isopropylbenzene ND U m-diethylbenzene ND U Methylcyclohexane Methylcyclopentane m-ethyltoluene m-xylene/p-xylene n-butane n-decane n-dodecane U n-heptane n-hexane n-nonane n-octane n-pentane n-propylbenzene n-tridecane ND U n-undecane o-ethyltoluene o-xylene p-diethylbenzene ND U p-ethyltoluene Propane Propylene Propyne ND U Styrene ND U Toluene trans-2-butene ND U trans-2-hexene ND U trans-2-pentene ND U CE = Not reportable due to co-eluting compound U = Under detection limit